libunwind does not compile

[Ian Lepore]

On Mon, 2016-03-14 at 21:05 +0100, Ronald Klop wrote:
> Hello,
> 
> I'm cross compiling for Sheevaplug on a recent amd64/11-CURRENT with
> clang  
> 3.8.0.
> uname: FreeBSD sjakie.klop.ws 11.0-CURRENT FreeBSD 11.0-CURRENT #8  
> r296724M: Sun Mar 13 16:03:31 CET 2016      
> root at sjakie.klop.ws:/usr/obj/usr/src/sys/GENERIC-NODEBUG  amd64
> 
> Using these settings:
> export TARGET_ARCH=arm
> export MAKEOBJDIRPREFIX=/usr/obj-arm
> export KERNCONF=SHEEVAPLUG
> export WITH_NAND=yes
> export WITH_ARM_EABI=yes
> export WITH_GCC=yes
> export WITH_GNUCXX=yes
> export WITHOUT_CLANG_IS_CC=yes
> export NO_CLEAN=yes
> export DESTDIR=/mnt/usbdisk
> 
> I get the error below. Is this known/expected? What can I do to fix
> it? I  
> build gcc because clang 3.7 did not work on arm (although it could  
> cross-compile to arm).
> 
> 
> ===> gnu/lib/libgcc (obj,depend,all,install)
> (cd /usr/src-arm/gnu/lib/libgcc; make -f  
> /usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile  
> MFILE=/usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile 
> GCCDIR=/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc gthr
> -default.h)
> `gthr-default.h' is up to date.
> (cd /usr/src-arm/gnu/lib/libgcc; make -f  
> /usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile  
> MFILE=/usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools/Makefile 
> GCCDIR=/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc unwind.h)
> `unwind.h' is up to date.
> cc -O -pipe   -DTARGET_ARM_EABI -DIN_GCC -DIN_LIBGCC2  
> -D__GCC_FLOAT_NOT_NEEDED  -DHAVE_GTHR_DEFAULT   
> -I/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcclibs/include   
> -I/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc/config  
> -I/usr/src-arm/gnu/lib/libgcc/../../../contrib/gcc -I.   
> -I/usr/src-arm/gnu/lib/libgcc/../../usr.bin/cc/cc_tools 
> -Dinhibit_libc  
> -fno-inline -std=gnu99    -fheinous-gnu-extensions -Qunused-arguments
>   -c  
> /usr/src
> -arm/gnu/lib/libgcc/../../../contrib/gcc/config/arm/libunwind.S -o  
> libunwind.o
> /usr/src
> -arm/gnu/lib/libgcc/../../../contrib/gcc/config/arm/libunwind.S:29:10
> :  
> fatal error: 'machine/acle-compat.h' file not found
> #include <machine/acle-compat.h>
>           ^
> 1 error generated.
> *** [libunwind.o] Error code 1

When I crossbuild -current for dreamplug and I want gcc instead of
clang, I use these settings:

 WITH_GCC=yes
 WITH_GNUCXX=yes
 WITH_GCC_BOOTSTRAP=yes
 WITHOUT_CLANG=yes
 WITHOUT_CLANG_IS_CC=yes
 WITHOUT_CLANG_BOOTSTRAP=yes

That said, you may also be interested to hear that clang 3.8 runs fine
on a *plug on -current.  I've been using clang 3.8 (from the project
branch before the recent merge to current) and gcc on my dreamplug
within the past month.

-- Ian